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| Registros recuperados: 116 | |
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| Cassanego,Mara Betânia Brizola; Goldoni,Angélica; Heldt,Fágner Henrique; Osório,Daniela Montanari Migliavacca; Windisch,Paulo Günter; Droste,Annette. |
| Regnellidium diphyllum Lindm. is a heterosporous fern growing in wetlands and humid soils that are being converted to agricultural activities. Many products that are used in agriculture contain copper, resulting in surface and groundwater contamination. Germination and initial development tests were performed using Meyer's solution containing copper sulphate at concentrations of 0 (control), 1, 5, 10, 50 and 100 mg L-1. The experiment was conducted in a growth chamber at 25 ± 1ºC for 28 days, with a 12/12-hour light/dark cycle and a photon flux density of 100 µmol m-2 s-1. The lowest germination rate (6%) was observed at 100 mg L-1. Primary root growth was significantly reduced at > 10 mg L-1. Secondary leaves of sporophytes grown in concentrations >... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fern; Heavy metals; Pollution; Reproduction; Species conservation; Wetlands. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100004 |
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| Resende,Isa Lucia de Morais; Chaves,Lázaro José; Rizzo,José Ângelo. |
| We analyzed the floristics and phytosociology of three palm swamps in the municipality of Bela Vista de Goiás, located in the state of Goiás, Brazil, in the central part of the Brazilian savanna (Cerrado). The floristic surveys were conducted monthly from May 2008 to April 2009, and 310 species were recorded (seven bryophytes, 15 ferns and 288 angiosperms). Bryophytes belonged to five genera and five families; ferns belonged to nine genera and nine families; and angiosperms belonged to 134 genera and 45 families. The angiosperm families with the highest species richness were Poaceae, Cyperaceae, Asteraceae, Eriocaulaceae, Xyridaceae, Lentibulariaceae, Melastomataceae, Rubiaceae and Fabaceae. The palm swamps were divided into three zones of increasing... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Wetlands; Brazilian savanna; Plant diversity. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100020 |
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| Souza,Sthefanie do Nascimento Gomes de; Piedade,Maria Teresa Fernandez; Demarchi,Layon Oreste; Lopes,Aline. |
| ABSTRACT Amazon wetlands are among the most vulnerable ecosystem to be impacted by climate change, which may increase the frequency of extreme droughts and floods. We used Eichhornia crassipes and Pistia stratiotes, two abundant aquatic plants in the Amazon floodplains, to evaluate the effects of combined temperature and [CO2] increase on growth, physiology and ecological interactions. Individual and paired plants were deposited for three weeks in a microcosm under four IPCC scenarios: control (current temperature/CO2), mild (control + 1.5 ºC, 200 ppm CO2), intermediate (control + 2.5 ºC, 450 ppm CO2) and extreme (control + 3.5 ºC, 850 ppm CO2). P. stratiotes died after three weeks in the intermediate and extreme treatments; E. crassipes experienced no... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biomass; Competition; Eichhornia crassipes; Pistia stratiotes; Wetlands. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062021005002204 |
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| Kalesnik, Fabio; UBA/Argentina; Aceñolaza, Pablo; UBA/Argentina. |
| The distribution and abundance of exotic and native species in levee neo-ecosystems were analyzed. No invasive species were found in unit A; their absence could be explained by the fluvial action of the Paraná river, extraordinary flood episodes and anthropic disturbances. Invasive species associated with the tidal regimen of the de la Plata river were present in units B and C, particularly Chinese privet (L. sinense), green ash (F. pennsylvanica), honey locust (G. triacanthos), Japanese honeysuckle (L. Japonica), blackberry ( Rubus spp.), box elder (A. Negundo ) and glossy privet (L. Lucidum).Native species showed low recovery values, both at a regional level and within each unit, with the exception of A. The neo-ecosystems with the greater degree of... |
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Palavras-chave: Wetlands; Lower delta; Neo-ecosystems; Invasive species; “Monte Blanco” species. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5869 |
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| Kandus, Patricia; UBA/Argentina; Minotti, Priscila; UC/Argentina; Malvárez, Ana Inés; UBA/Argentina. |
| We generated a map of wetlands in Argentina from the digital edition of the National Soil Inventory made by the National Institute of Agricultural Technology (Instituto Nacional de Tecnología Agropecuaria, INTA). Potential wetland areas were extracted from the map after an exhaustive analysis of the database and reassignment of the soil classes, by taking into account 1) soil taxonomic classes; 2) constraining factors (waterlogging, flooding, drainage impairment); and 3) cartographic categories, including lakes, lagoons, marshes and salt lakes. Estimated wetland area is about 600,000 km2, representing 21.5% of the national territory; it increases to 23% when considering salt lakes and deepwater bodies, but their surface is underestimated in the INTA... |
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Palavras-chave: Wetlands; Soil chart; National inventory; Argentina wetlands; Soil chart; National inventory; Argentina. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5870 |
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| FERREIRA-JÚNIOR,WALNIR G.; SCHAEFER,CARLOS E.G.R.; CUNHA,CÁTIA N.; DUARTE,TEMILZE G.; CHIEREGATTO,LUIZ C.; CARMO,FLÁVIA M.S.. |
| ABSTRACT This study aimed to recognized the preferential location of species of the tree sinusiae in response to a moisture gradient in Pantanal Matogrossense, Brazil. We established sampling plots of arboreal sinusiae along a soil moisture and flood gradient. Piezometers were installed, allowing monthly measurements of water table depth and flood height during one year. Detrended Correspondence Analysis, Gradient Direct Analysis, Multi-response Permutation Procedures and Indicator Species Analysis were performed to evaluate the effect of moisture gradient on tree distribution. The annual variation of water table is shallower and similar in Seasonally Flooded Forest and Termite Savanna, with increasing depths in Open Savanna, Savanna Forest and Dry Forest.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Floristic composition; Flood pulse concept; Wetlands; RPPN SESC Pantanal. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000200719 |
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| Silveira,Maurício; Munin,Roberto Lobo; Tomás,Walfrido Moraes; Fischer,Erich; Bordignon,Marcelo Oscar; Silveira,Guilli de Almeida. |
| The largest New World bat, Vampyrum spectrum, is a locally rare top predator, which occurs from Mexico to South America. Here, we report for the first time its occurrence in the southern Pantanal floodplain, basing our records on specimens that are also the first to be reported for the State of Mato Grosso do Sul, Brazil. We conducted bat surveys in two sites 120 km apart, in the Aquidauana and Nhecolândia regions. Among 2,498 bat captures, two individuals of V. spectrum were mist-netted, one at each site. These records expand southward the distribution range of V. spectrum, and in addition to other records in the Northern Pantanal border and Bolivia support that V. spectrum is widely distributed in the upper Paraguay basin. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chiroptera; Wetlands; Paraguay river basin; Mato Grosso do Sul; Phyllostominae. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000100017 |
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| Pansonato,André; Mott,Tamí; Strüssmann,Christine. |
| In the Pantanal, the largest continuous floodplain in the world, the diversity and distribution of anuran amphibians vary in and across distinct subregions and distinct habitats occurring along inundation gradients. Permanent and natural aquatic habitats are relatively scarce in the Pantanal, and occurrence of temporary aquatic habitats varies seasonally, depending on rains. We here present results of evaluations of anuran's species richness and abundance in a seasonally flooded area in the northwestern section of the Pantanal (Fazenda Baía de Pedra, Cáceres municipality, state of Mato Grosso, Brazil), comparing values obtained in 10 plots systematically distributed over 5 km² with those obtained in additional aquatic plots in the study area. Data were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anura; Species rarefaction curve; Wetlands; Temporary ponds; Permanent ponds. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000400008 |
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| Diaz,Maria F; Silva,Wladimir. |
| Sphagnum species, primarily Sphagnum magellanicum Brid., are used internationally as a substrate for horticulture. Market demands have promoted indiscriminate exploitation leading to a number of potentially negative ecological and social consequences, including disruption of Sphagnum ecosystems, changes in water storage capacity of moss wetlands affecting water supply to rural communities and reduction of biodiversity. This study proposes improvements in harvesting techniques to ensure moss regeneration and promote sustainability of moss cover in harvested areas. The aim of this study was to determine the maximum harvesting depth for moss regeneration. Samples were taken and divided into sections associated with different depths. We recorded and marked the... |
| Tipo: Journal article |
Palavras-chave: Sphagnum moss; Sustainable management; Wetlands. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000200021 |
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| Ibarra,José Tomás; Anderson,Christopher B; Altamirano,Tomás A; Rozzi,Ricardo; Bonacic,Cristián. |
| Sphagnum-dominated peat bogs that are strongly embedded within the southern temperate forest matrix are increasingly being used for agriculture. Nevertheless, little is known about their biodiversity. Moreover, the remote areas of southern Chile where peat bogs are found, such as the Cape Horn Biosphere Reserve (CHBR, 54-55ºS), where birds are the most diverse and best represented group of vertebrates, have not been well-investigated. With the aim to broaden this knowledge in the CHBR, we studied the diversity of the avian assemblage in peat bogs on Navarino Island. We compared the composition of avian species between wetlands with and without peat bogs to test if Sphagnum bogs represented a singular habitat for birds in this area. Furthermore, the 37 bird... |
| Tipo: Journal article |
Palavras-chave: Assemblage; Cape Horn Biosphere Reserve; Navarino Island; Patagonia; Sphagnum spp.; Wetlands. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000100003 |
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| Registros recuperados: 116 | |
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